Issue #3328456 by xjm, dimitriskr, murilohp, smustgrave: Replace substr($a, 0, $i) with str_starts_with()

Issue #3379495 by quietone, xjm, smustgrave: Convert enable/disable to install/uninstall in hook_help()

Issue #3268838 by quietone, TR, smustgrave, xjm: Fix functions and test modules for Drupal.Commenting.DocComment.ShortSingleLine

Issue #2806009 by alexpott, JvE, Berdir, Dmitriy.trt, jhodgdon, lokapujya, VladimirAus, Gábor Hojtsy, Jose Reyero, Anybody, kristiaanvandeneynde, Sutharsan, casey, smustgrave, nod_: Installing a module causes translations to be overwritten

Issue #3092672 by _utsavsharma, apaderno, xjm, smustgrave: Remove outdated @todo from the Locale module

Issue #3074765 by Chewie, dxvargas, Ankit.Gupta, heddn, Denes.Szabo, SpadXIII: Performance improvement for importing of project translations

Issue #3268829 by quietone, bbrala: Fix class property comments for Drupal.Commenting.DocComment.ShortSingleLine

Issue #1014086 by catch, nod_, martin107, quietone, dww, mariacha1, Spokje, yogeshmpawar, pounard, Wim Leers, mfer, mikeytown2, mbutcher, moshe weitzman, Fabianx, borisson_, alexpott, donquixote, sun, andypost, dawehner: Stampedes and cold cache performance issues with css/js aggregation

Issue #3112290 by Spokje, mondrake, mpdonadio, daffie, andypost, Kristen Pol, quietone, mallezie, alexpott: Replace REQUEST_TIME in procedural code

Issue #697946 by voleger, pguillard, pillarsdotnet, andypost, alansaviolobo, alexpott, vaibhavjain, MerryHamster, sja112, kim.pepper, shaktik, ravi.shankar, Pooja Ganjage, daffie, Mile23, legolasbo, joelpittet, almaudoh, xjm, Berdir, scor: Properly deprecate module_load_include() and move it into \Drupal::moduleHandler() service

Issue #3222251 by bbrala, longwave: [November 8, 2021] Replace all isset constructs with the null coalescing operator

Issue #3189880 by mondrake, raman.b, Pooja Ganjage, daffie, Megha_kundar, dww, S_Bhandari: Use square brackets syntax in sql queries

Issue #2851394 by GoZ, hgunicamp, oknate, jungle, wolffereast, tameeshb, mmatsoo, ridhimaabrol24, jofitz, swarad07, tanc, shaktik, dimaro, shashikant_chauhan, MerryHamster, quietone, nitesh624, martin_q, boaloysius, gaurav.kapoor, nitvirus, ankithashetty, Munavijayalakshmi, kostyashupenko, leolando.tan, amit.drupal, ravi.shankar, akashkrishnan01, Swapnil_Kotwal, Saviktor, mrinalini9, anmolgoyal74, Venkatesh Rajan.J, shimpy, lomasr, Dinesh18, shubham.prakash, mahtab_alam, markdorison, cilefen, longwave, bleen, xjm, alexpott, gmaltoni: Fix grammar 'a' to 'an' when necessary

Issue #3168261 by shetpooja04: Remove unused variable $language_list in locale module, locale.module

Issue #3167599 by shetpooja04, jijojoseph_zyxware: Unused variable $frequency in locale module, locale.module

Issue #3055194 by catch, mikelutz, longwave, mkalkbrenner, hchonov: [Symfony 5] The signature of the "Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher::dispatch()" method should be updated to "dispatch($event, string $eventName = null)", not doing so is deprecated since Symfony 4.3

Issue #2778917 by kiamlaluno, jungle, elaman, dawehner, alexpott, tvb, vadim.hirbu, ravi.shankar, quietone: Use the second parameter of \Drupal::state()->get() instead of checking the method didn't return any value

Issue #3072906 by bnjmnm, zrpnr, Wim Leers, lauriii, catch, mpdonadio, xjm, rainbreaw, andrewmacpherson, mgifford, anevins, jhedstrom: Deprecate and remove jQuery UI datepicker

Issue #3047801 by Eduardo Morales, mikelutz, pguillard, nlisgo, sathish.redcrackle, Berdir: Replace all calls to the deprecated Drupal::l() function in Core

Issue #2875394 by voleger, erozqba, Berdir, mondrake: Replace all calls to db_query, which is deprecated

Issue #2731817 by mikelutz, ashishdalvi, Sonal.Sangale, dbt102, andypost, jhodgdon, martin107, roderik: Replace all calls to the deprecated Drupal::url() function in Core

Issue #3004226 by Elendev, alexpott: Allow formatPlural's plural string not to have '@count' in it in JavaScript

Issue #2244513 by kim.pepper, phenaproxima, 20th, andrei.dincu, beejeebus, Berdir, alexpott, jibran, andypost, larowlan, Chadwick Wood, acbramley, Wim Leers, sun, xjm, YesCT, chx, tim.plunkett: Move the unmanaged file APIs to the file_system service (file.inc)

Revert "Issue #2244513 by kim.pepper, phenaproxima, 20th, andrei.dincu, beejeebus, Berdir, jibran, alexpott, andypost, larowlan, Chadwick Wood, Wim Leers, acbramley, YesCT, sun, tim.plunkett, chx: Move the unmanaged file APIs to the file_system service (file.inc)"

This reverts commit 56be1a03.

Issue #2244513 by kim.pepper, phenaproxima, 20th, andrei.dincu, beejeebus, Berdir, jibran, alexpott, andypost, larowlan, Chadwick Wood, Wim Leers, acbramley, YesCT, sun, tim.plunkett, chx: Move the unmanaged file APIs to the file_system service (file.inc)

Issue #2911606 by andypost, jludwig, msankhala, brathbone, imalabya, RajeevChoudhary, benjifisher: Replace usage of the deprecated LOCALE_PLURAL_DELIMITER constant

Issue #2850033 by andypost, jeetendrakumar, Sharique, pk188, piggito, voleger, gaurav.kapoor, yogeshmpawar, xjm: Replace all calls to db_delete, which is deprecated

Issue #2848952 by voleger, andypost, mondrake, jeetendrakumar, pk188, hgunicamp, piggito, JayKandari, daffie, shashikant_chauhan, xjm, cilefen, chiranjeeb, Pavan B S: Replace all calls to db_merge(), which is deprecated

Issue #2901730 by mfernea, ankitjain28may, idebr: Fix 'Squiz.WhiteSpace.FunctionSpacing' coding standard

Issue #2907863 by tucho, Sutharsan, Gábor Hojtsy: Prefer HTTPS protocol over HTTP when fetching translations

Issue #2776975 by joelpittet, dawehner, tim.plunkett, xjm, pfrenssen: March 3, 2017: Convert core to array syntax coding standards for Drupal 8.3.x RC phase